JPH0525703B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic direction change device for a vehicle, and more particularly to an automatic direction change device for a vehicle, which is capable of rotating in any azimuth, clockwise or counterclockwise, or when parked or parked. Automatic direction for vehicles that allows a stationary vehicle to move a desired distance to the left or right, making it easier to change the direction of the vehicle in tight spaces, such as in alleys or crowded areas. This invention relates to a conversion device.

[Prior Art and Problems to be Solved by the Invention] In recent years, due to the rapid increase in the number of vehicles, traffic conditions and parking problems in town centers have become increasingly serious. ing. Particularly when it is necessary to take out a vehicle that is stuck in a narrow space such as a parking lot, or when you want to direct the vehicle toward a narrow road or dead end, a device that can rotate the vehicle within the minimum radius is required. is truly desired.

As a prior art for this purpose, a direction changing device using hydraulic pressure is disclosed in Korean Patent Publication No. 88-5162 (April 15, 1988). Hydraulic cylinders connected to a hydraulic pump are located at both the front and rear of the bottom of the vehicle, and on the sides of the bottom, and the reduction gear and It has a configuration in which rollers are attached. The piston is raised and lowered using hydraulic pressure from a hydraulic pump, and at the end of the piston, rollers are rotated by separate motors to rotate the vehicle in a desired direction or move it from side to side. It will be done. however,
Such conventional devices have a relatively complex configuration, such as a hydraulic pump and a motor driving it, three cylinders/pistons, and rollers attached to the ends of the front, rear, and side square pistons, respectively. In addition, in conventional devices, the size of the rollers for changing direction is relatively small in places where the road surface is not very hard, so the rollers get stuck and it is difficult to actually change direction. I have a problem. Furthermore, when rotating a vehicle, the conventional device has the problem that the radius of rotation of the vehicle exceeds at least the entire length of the vehicle, so the space required for this rotation is larger than that of the vehicle. ing.

Accordingly, the main object of the present invention is to provide a vehicle direction changing device having a completely new configuration, which is free from the various problems of the prior art as described above.

Another object of the present invention is to dispose an air tube at the bottom of the vehicle, inflate the air tube, and move the vehicle body to the right or left while the vehicle body is lifted to a predetermined height from the ground. To provide an automatic direction change device.

Still another object of the present invention is to lift the vehicle to a predetermined height from the ground within the entire length of the vehicle body.
To provide an automatic direction change device capable of any rotation angle to the left or right.

Another object of the present invention is to make it possible to lift a vehicle regardless of the road surface condition by utilizing an air tube, and to automatically change the direction of the vehicle so that the vehicle body can be lifted even when the wheels of the vehicle are stuck in a muddy road. We are here to provide you with the equipment.

Still another object of the present invention is to provide an automatic direction change device that also has a jacking function when replacing or repairing tires by lifting the vehicle body using an air tube.

[Means for Solving the Problems] The automatic direction change device according to the present invention having the above object generally includes a left-right moving means, a rotating means,
and a lifting means for lifting the vehicle from the ground to a predetermined height.

This left and right moving means includes a guide rail protruding downward on both sides of the bottom plate of the vehicle, a plurality of guide rollers fixed by a support plate below the cover plate and meshing with the guide rail, and the upper surface of the support plate. A moving motor fixed to the motor and capable of forward and reverse rotation, a worm gear attached to the rotating shaft of this motor, large-diameter and small-diameter gears for deceleration that mesh with the worm gear, and It consists of a rack fixed in the direction and meshed with a small diameter gear.

The aforementioned rotation means includes a rotation motor fixed to the upper surface of the support plate, a worm attached to the rotating shaft of the motor, large-diameter and small-diameter gears for deceleration that mesh with the worm, and a rotation motor fixed to the upper surface of the support plate. Fixed to the center part of the lower circular base plate,
A circular internal gear that meshes with a small diameter gear for deceleration, and supporting rollers fixed in four directions of the support plate at the bottom, so that the moving means and the rotating means are supported by the upper plate of the circular base plate. a support roller for
A hollow shaft is fixed at the center of the support plate and has a lower end supported by a bearing at the center of the circular base plate.

Further, the above-mentioned elevating means includes an air tube attached to the bottom of the circular base plate, a bottom plate attached to the bottom of the air tube and connected with a spring between the circular base plate.
It is equipped with a valve device and hoses for blowing air into the air tube or discharging air from the air tube.

In another embodiment of the invention, the rack and pinion of the left-right moving means are moved by bevel gears and threaded rods.

[Effects of the Invention] The automatic direction change device according to the present invention configured as described above has a recess at a predetermined depth at the bottom of the vehicle, and almost all the components except the lifting means are located within this recess. can be arranged in
It can also be easily fixed to the bottom plate of the vehicle. However, by installing this device, a predetermined recess is formed in the width direction of the vehicle in order to avoid lowering the height of the bottom of the vehicle from the ground, and all mechanical components are It is preferable to arrange it so that it fits within this recess. Furthermore, regarding its fixed position,
The center of gravity is well positioned to avoid tipping forward or backward when the vehicle is lifted.

[Embodiment] FIG. 1 schematically shows a state in which an automobile is elevated from the ground to a predetermined height H using an embodiment of the vehicle direction changing device of the present invention. In the illustrated embodiment, the weight of the motor vehicle engine causes its center of gravity to be displaced slightly forward, so that the deflection device is located slightly forward of the center position of the bottom of the motor vehicle. This height H is normally about 15 cm, but the strength of the air tube can be selected depending on the type or size of the vehicle, and the height can be adjusted to an appropriate height.

Hereinafter, the structure of the vehicle direction changing device of the present invention will be explained in detail with reference to FIGS. 2 to 5.

As described above, the direction changing device of the present invention includes a left-right moving means, a rotating means, and a lifting means.

This left/right direction moving means is a rectangular cover plate 10.
Parallel guide rails 11, 11 protrude downward at a predetermined distance from each other on both sides of the bottom surface of the cover plate 10, and a plurality of parallel guide rails 11, 11 are fixed to both sides of the support plate 20 on the lower side of the cover plate 10 and engage with the guide rails 11, 11. , a reversible motor 13 fixed to the upper surface of the support plate 20, a worm gear 14 attached to the drive shaft of the motor 13, and a worm gear 14 that meshes with the worm gear to control the rotational speed of the motor 13. It includes large and small gears 15 and 16 that reduce speed, and a rack 17 that is fixed in the vehicle width direction on the bottom side of the cover plate 10 and meshes with a small gear, such as a pinion 16. Furthermore, both longitudinal edges of this cover plate 10 are bent downward, and this lower end is further bent inward,
Separate contact members 18, 18 are thereby inserted. The frictional resistance of the contact portions of the contact members 18, 18 with the support plate 20 is small.

The rotation means includes a reversible rotation motor 21 fixed to the lower surface of the support plate 20, and a worm gear 22 fixed to the rotation shaft of the motor 21.
, large and small gears 23 and 24 for deceleration that mesh with the worm gear 22, and a circular internal gear 25. This internal gear 25 is fixed to the center of the lower surface of the circular lower substrate 30 of the support plate 20,
A small gear 24 that is a reduction gear, for example a pinion 24
meshes with Furthermore, this rotating means is mounted on the bottom surface of the support plate 20 in four directions, and is fixed to the central part of the support plate 20 with support rollers 26, 26 that support the circular base plate 30, the left-right moving means, and the upper surface of the rotating means. and a hollow shaft 28 whose lower end is supported by a bearing 27 at the center of a circular substrate 30. The pinion 24 passes downward through the support plate 20 having the shaft 23' of the large gear 23, and meshes with the internal gear 25 below the support plate 20.

Further, the lifting means for lifting the vehicle body to a predetermined height from the ground includes an air tube 31 attached to the bottom surface of the circular base plate 30 and a tensioner fixed to the bottom surface of the air tube 31 and disposed between the base plate 30. A bottom plate 33 connected by springs 32, 32, a flexible hose 34 fixed at one end to this air tube 31, one end fixed to this hose 34 by a ring-shaped coupling means 35, and the other end connected to the air supply tube 31. a flexible hose 37 coupled to a source 36. The circumference of the circular base plate 30 is bent downward and slightly inclined, so that it can surround the air tube 31 when tightened. As shown in phantom lines in FIGS. 3 and 4, this air tube 31 is connected to an elastic band 38 inside thereof.
This prevents the circular substrate 30 from being pushed out when tightened.

The air source 36 can be exhaust gas, or a separate compressed air tank 36' can be used as shown in FIG.
Further, the ring-shaped coupling means 35 connects the hose 34 fixed to the air tube 31 and the air supply source 3.
6, 36', thereby preventing these hoses 34, 37 from twisting together when the vehicle is rotated.

The above connection hose 37 and air supply source 36,3
The details of the connecting portion with 6' will be explained with reference to FIG.

When the air supply source is exhaust gas, an electronically controlled three-way valve 39 and a check valve 40 are inserted between the exhaust pipe of the vehicle and the connecting hose 37.

This three-way valve 39 is connected to an operating switch (not shown) located in the driver's seat, and by operating this operating switch, the exhaust gas can be filled into the air tube 31 by blocking the release of the exhaust gas into the atmosphere.
Alternatively, the air tube 31 can be stopped from being filled and discharged to the atmosphere. Also, check valve 4
0 opens in accordance with the signal from the 3-way valve 39, and when the air in the air tube 31 is exhausted, the air in the air tube 31 is released to the atmosphere via the 3-way valve 39 and the check valve 40. can be released.

On the other hand, a compressed air tank 3 with an independent air supply source
6', the on-off valve 39' and the check valve 40' are inserted between them in the same manner as described above, and the air in the compressed air tank 36' is
0' into the air tube 31.
When attempting to discharge the air within the air tube 31, it is also possible to use the three-way valve 39 and check valve 40 described above.

Furthermore, FIG. 7 shows a part of the operating force transmission mechanism in the left-right moving means according to another embodiment of the present invention. In this embodiment, the output of the drive motor 13 is transmitted via the reduction gear 15 and the worm 14 to a bevel gear 15', which is fixed to the end of the threaded bar member 19. It meshes with the bevel gear 16'. A nut 19' fixed to the bottom surface of the cover plate 10 locks the threaded bar member 19, so that the vehicle cannot be moved left and right in accordance with the direction of rotation of the threaded bar member 19. can.

Next, the horizontal movement, rotation, and
Its operation and effects will be explained.

When the vehicle is moved or rotated, the air tube 31 is filled with air from the air supply sources 36, 36' by operating the operating switch placed at a predetermined position on the driver's seat, as shown in FIG. expands, and the vehicle body rises to a predetermined height H from the ground. When the drive motor 13 is operated in this state, the output is transmitted via the worm 14 fixed to the rotating shaft, and the large and small gears 15 and 16 for deceleration are further transmitted.
The rotational speed is reduced to a predetermined speed, and as the pinion 16 rotates, the rack 17 that meshes with it moves. Since this rack 17 is fixed to a cover plate 10 attached to the bottom plate of the vehicle body, the vehicle body can be moved, and this direction can be changed to the right or left depending on the direction of rotation of the motor 13.

As mentioned above, when the vehicle body moves a predetermined distance to the right or left, the guide rails 11 and 1 on the bottom surface of the cover plate 10 fixed to the bottom plate of the vehicle body are
1 is a guide roller 12 fixed to a support plate 20;
12 and moves while being guided by the support plate 2.
0 and the members fixed thereto do not move. When the vehicle body moves a predetermined distance, the vehicle body tilts in the direction of movement and the wheels on the moving side contact the ground, but it is possible to move the vehicle even with the wheels in contact with the ground. Furthermore, theoretically, the distance that the vehicle can move left and right in one move, that is, the moving pitch, corresponds to the entire length of the rack 17, but in reality, the length of the rack 17 exceeds 2/3 of the total width of the vehicle body. Since it is difficult to do this, approximately two operations are required to move left and right a distance corresponding to the entire width of the vehicle body.

Although FIG. 5 shows a state in which the vehicle body has been moved a predetermined distance to the right, the vehicle body can be moved to the left by rotating the motor 13 in the opposite direction. Furthermore, when moving the vehicle body to the right or left, the rack 17 is used to control the distance of movement.
Alternatively, a detection sensor can be attached to a predetermined position on the cover plate 11.

On the other hand, FIG. 6 shows a state in which the vehicle body has turned to the right by a predetermined rotation angle. In this case, with the air tube 31 inflated and the vehicle body lifted from the ground by a predetermined height H,
When the turning motor 21 is driven by operating the switch, the automobile turns in the same manner as in the previous case. The rotational force of the motor 21 is transmitted to a pinion 24 via a worm 22 for deceleration and a large-diameter gear 23.
rotates the inner gears 25 that mesh with each other. At the same time, the support rollers 26, 26 fixed to the bottom wall of the support plate 20 are supported on the top surface of the circular base plate 30, together with the motor 20 fixed to the support plate 20, the motor 13 for movement, the cover plate 10, etc. in a state of
The vehicle body pivoted in one piece and thus supported on the cover plate 10
It will be rotated along with the others.

After the direction change in the desired direction is completed by moving the vehicle to the left or right as described above, that is, by turning the vehicle, when a signal is given to the three-way valve 39 by operating the switch, air tube 3
1 is released into the surrounding atmosphere through the check valve 40 and the three-way valve 39. At the same time, the air tube 31 has a circular base plate 30 and a bottom plate 3, as shown in FIGS.
3 and an elastic band 38 connected to the inside of the air tube 31;
Due to the elastic force of 38, a small line segment (atom
line) to the bottom of the circular base plate 30.

The above-mentioned automatic direction change device of the present invention has the advantage that the air tube is inflated to lift the car, and then the car can be moved from side to side, that is, the direction of the car can be changed in a minimum space. There is. This is because the vehicle body is lifted by being supported over a relatively wide area, so even if the wheels of the vehicle are stuck in a muddy road or other area, the vehicle body can be easily pulled up. .

[Brief explanation of the drawing]

FIG. 1 is a side view showing how an automatic direction change device according to an embodiment of the present invention is used, and FIG.
3 is an enlarged sectional view taken along the - line in FIG. 2; FIG. 4 is an enlarged sectional view taken along the - line in FIG. 2; Fig. 5 is a schematic explanatory diagram showing moving the car to the right by a predetermined distance, Fig. 6 is a schematic explanatory drawing showing turning the car to the left by a predetermined rotation angle, Fig. 7 8 is a schematic diagram of a power transmission mechanism showing another embodiment of the present invention.
The figure is a pneumatic circuit diagram of the automatic direction change device. 10... Cover plate, 11... Guide rail, 12... Guide roller, 13... Travel motor, 14, 22... Worm gear, 15, 23...
...Large diameter gear, 15', 16'...Bevel gear, 1
6, 24...Small diameter gear, 17...Rack, 19...
...Screw shaft, 19'...Nut, 20...Support plate, 21...Swivel motor, 25...Internal gear,
26... Support roller, 27... Bearing, 28... Hollow shaft, 30... Base plate, 31... Air tube, 32... Tension spring, 33... Bottom plate, 34... Hose, 37... Possible flexible hose,
39... Three-way valve, 40... Check valve.

Claims (1)

[Claims] 1. A rectangular cover plate attached to the bottom of the vehicle, a guide rail protruding from both sides of the bottom of the cover plate, fixed to the upper surface of the cover plate and a support plate below the guide rail, A guide roller guided on a guide rail,
A moving motor fixed to the upper surface of the support plate and capable of forward and reverse rotation, a worm gear fixed to the rotating shaft of the moving motor, large-diameter and small-diameter gears that are meshed with the worm gear to reduce the rotational speed of the moving motor, and a cover plate. A moving means consisting of a rack fixed to one side of the bottom of the support plate and meshed with a small diameter gear, a swing motor fixed to the top of the support plate and capable of forward and reverse rotation, a worm gear fixed to the rotating shaft of the swing motor, and a worm gear. Large and small diameter gears are meshed with the worm gear for deceleration, a circular internal tooth gear is fixed to the center of the upper surface of the circular base plate on the lower side of the worm gear, and is meshed with the small diameter gear, fixed to the bottom of the support plate and the base plate A support roller that supports the support plate against the upper surface, a rotating means consisting of a hollow shaft fixed to the center of the support plate and whose lower end is supported by a bearing in the center of the base plate, and fixed to the bottom surface of the base plate. a bottom plate fixed to the bottom of the air tube and connected to the base plate by a tension spring; a hose fixed to the air tube and passing through the hollow shaft; and a flexible tube connected to the air supply source, the other end being connected to an air supply source. 2. According to claim 1, the moving means comprises a bevel gear that transmits the rotational force of the moving motor, a screw shaft connected to the bevel gear, and a nut attached to the bottom surface of the cover plate and meshed with the screw shaft. Automatic direction change device for vehicles. 3. The automatic direction change device for a vehicle according to claim 1, wherein the air supply source is exhaust gas from a vehicle. 4. The automatic turning device for a vehicle according to claim 1, wherein the air supply source is a separate compressed air tank. 5. The automatic direction change device for a vehicle according to claim 1, further comprising a three-way valve and a check valve provided between the hose and the air supply source.